A Plus/Minus 45 Degree Dual-Polarized Base-Station Antenna With Enhanced Cross-Polarization Discrimination via Addition of Four Parasitic Elements Placed in a Square Contour

PROJECT TITLE :

A Plus/Minus 45 Degree Dual-Polarized Base-Station Antenna With Enhanced Cross-Polarization Discrimination via Addition of Four Parasitic Elements Placed in a Square Contour

ABSTRACT:

A novel technique of enhancing cross-polarization discrimination (XPD) of a twin-polarized base-station antenna, by addition of 4 parasitic parts placed during a square contour, is presented. 1st, it had been established that prime XPD at the broadside will be obtained by addition of four parasitic parts around a easy dual-polarized base-station antenna. Second, we have a tendency to investigated the principle of wide beamwidth high XPD after finding out magnitude currents on parasitic element, spacing between parasitic components and length of parasitic parts. Finally, a dual-polarized base-station antenna was designed, fabricated and measured. Measurement results are in good agreement with the results of simulation in terms of radiation pattern, gain, and Voltage Standing Wave Ratio (VSWR). In particular, the improved XPD is more than 20 dB at the boresight and additional than ten dB inside of the main lobe at the horizontal plane.

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